Rhododendron roxieanum Forrest

The extensive synonymy reflects the considerable variation in this species, especially with respect to the leaves. This variation may be in part due to hybridization in the field. In particular, var. cucullatum appears to be intermediate between the more extreme var. oreonastes and Rhododendron proteoides. However, relatively uniform populations of var. cucullatum occur in W Yunnan.

Shrubs, 1–3 m tall; branchlets short, stout and slightly flexuous, densely rufous or rust-red woolly-tomentose when young; bud scales persistent. Petiole ca. 10 mm, thickly woolly-tomentose; leaf blade thickly leathery, narrowly lanceolate to oblanceolate or linear, 3–10 × 0.5–3 cm; base cuneate, decurrent along petiole; margin strongly revolute; apex acute and with a stiff sharp point, or cucullate; abaxial surface with indumentum 2-layered, upper layer thick, rust-red to rufous, loose, woolly-tomentose, hairs branched, lower layer thin, compacted; adaxial surface shiny, slightly rugulose, glabrous except for groove of midrib. Inflorescence racemose-umbellate, 10–15-flowered; rachis ca. 10 mm, rusty red-tomentose. Pedicel 1–1.5 cm; calyx lobes 5, 0.5–1 mm, densely rust-red branched-tomentose and short-glandular-hairy; corolla campanulate to funnel-campanulate, white to white tinged pink, with copious purple-red spots on corolla-tube and on upper lobes, 2–3.5 cm, lobes 5; stamens 10, unequal, filaments densely puberulent in lower 1/2; ovary ca. 5 mm, densely rusty red-tomentose, sometimes mixed with short-stalked glands; style glabrous, stigma discoid. Capsule oblong cylindric, ca. 18 × 5 mm. Fl. Jun–Jul, fr. Aug–Oct.

S Gansu, SW Shaanxi, SW Sichuan, SE Xizang, NW Yunnan.

Coniferous forests, Rhododendron thickets, mountains, slopes; 2600–4300 m.

Rhododendron roxieanum is a species of flowering plant in the family Ericaceae, native to central China and Tibet. Its variety Rhododendron roxieanum var. oreonastes, called the mountain rolled-leaf rhododendron, has gained the Royal Horticultural Society's Award of Garden Merit.

Rhododendron roxieanum adalah spesies tumbuhan yang tergolong ke dalam famili Ericaceae. Spesies ini juga merupakan bagian dari ordo Ericales. Spesies Rhododendron roxieanum sendiri merupakan bagian dari genus Rhododendron.

Rhododendron roxieanum là một loài thực vật có hoa trong họ Thạch nam. Loài này được Forrest miêu tả khoa học đầu tiên năm 1915.

卷叶杜鹃（学名：Rhododendron roxieanum）为杜鹃花科杜鹃属下的一个种。